GM is ending its long tradition of Allison transmissions in its HD pickups, but the Silverado MD still features a true Allison transmission. This 2026 Chevy Silverado 6500 will still have an Allison transmission and Allison badge. If you’ve read previous reporting, including our own recent story, on the topic this may come as something of a surprise. According to Shad Bulch, director of communications for Chevrolet, Silverado medium duty trucks will continue to use genuine Allison transmissions after December 31, 2025. That includes the 4500 HD, 5500 HD and 6500 HD models, all of which use a genuine Allison […] (read full article...)